Since there are StockArticles for each supplier, the StockArticles has

to be excluded in normal articles-view.

app/controllers/articles_controller.rb

@@ -28,8 +28,8 @@ class ArticlesController < ApplicationController
     # if somebody uses the search field:
     conditions = ["articles.name LIKE ?", "%#{params[:query]}%"] unless params[:query].nil?
 
-    @total = @supplier.articles.count(:conditions => conditions)
+    @total = @supplier.articles.not_in_stock.count(:conditions => conditions)
-    @articles = @supplier.articles.paginate(:order => sort,
+    @articles = @supplier.articles.not_in_stock.paginate(:order => sort,
                                              :conditions => conditions,
                                              :page => params[:page],
                                              :per_page => @per_page,
@@ -136,7 +136,7 @@ class ArticlesController < ApplicationController
   
   # Renders a form for editing all articles from a supplier
   def edit_all
-    @articles = @supplier.articles.find :all,
+    @articles = @supplier.articles.not_in_stock.find :all,
       :order => 'article_categories.name, articles.name',
       :include => [:article_category]
 

app/models/article.rb

@@ -35,6 +35,7 @@ class Article < ActiveRecord::Base
   has_many :article_prices, :order => "created_at"
 
   named_scope :available, :conditions => {:availability => true}
+  named_scope :not_in_stock,  :conditions => {:type => nil}
 
   # Validations
   validates_presence_of :name, :unit, :price, :tax, :deposit, :unit_quantity, :supplier_id, :article_category_id

app/views/suppliers/index.haml

@@ -21,7 +21,7 @@
       %tbody
         - for supplier in @suppliers
           %tr{:class => cycle('even','odd', :name => 'suppliers')}
-            %td= link_to "<b>#{h(supplier.name)}</b> (#{supplier.articles.count})", supplier_articles_path(supplier)
+            %td= link_to "<b>#{h(supplier.name)}</b> (#{supplier.articles.not_in_stock.count})", supplier_articles_path(supplier)
             %td=h supplier.phone
             %td=h supplier.customer_number
             %td= link_to "Anzeigen", supplier